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Thermal stabilizing effect of Yb 3+ Er 3+ codoping into TiO2 powder prepared by sol-gel method and its upconversion characteristic

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2010, 20(4), pp.173~177
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

은종원 1,  오동근 1,  김광진 2,  홍태의 2,  Seong-Min Jeong ORD ID 3,  Bonggeun Choi 1,  Kwang Bo Shim 1

1한양대학교
2한국세라믹기술원 기업협력센터
3한국세라믹기술원

Accredited

ABSTRACT

Thermal stabilizing effect of Yb 3+, Er 3+codoping into TiO2 powder prepared by sol-gel method and its upconversion characteristics were analyzed. The effect of TiO2 : Yb 3+, Er 3+ions on crystallinity and phase transition was studied by X-ray diffraction (XRD). The change of band-gap energy induced from Yb and Er codoping was analyzed by UV-Vis. The band-gap energy of TiO2 have been slightly narrowed by Yb 3+, Er 3+codoping, which indicated that the Yb 3+,Er 3+ions can enhance the photo-catalytic property of TiO2. green and red up-conversions of Yb 3+and Er 3+co-doped Y2O3 :Yb 3+, Er 3+phosphor were analyzed by PL equipped with 980 nm laser.

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